A good indicator on Lantus is the +2 test. If it's about the same as the preshot, it'll be a typical Lantus cycle with some downward movement. You may still need a mid cycle test. If the +2 is quite a bit lower, then it's an active cycle needing more monitoring. If the +2 is higher, save your test strips. One caveat, the +2 works for most but not all cats. Mine it didn't, I had to use the +3 or +4 as a better indicator. She had a late onset. So do some experiments, get some +2 and some spot checks later in the cycle and see if it works for you. Then maybe a +2.5 and see if it's a better indicator. ECID - each cat is different.